Understanding invasion success: life-history traits and feeding habits of the alien crayfish<i>Orconectes immunis</i>(Decapoda, Astacida, Cambaridae)

Chucholl, Christoph

doi:10.1051/kmae/2011082

Cited by 32 publications

(36 citation statements)

References 35 publications

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“…This becomes particularly apparent when compared to the more r-selected NICS, which, by contrast, feature a rapid life cycle and high fecundity (cf. Souty-Grosset et al, 2006;Chucholl, 2012). The syntopic occurrence with stone crayfish raises the question of ecological niche competition.…”

Section: Resultsmentioning

confidence: 99%

Population ecology of endangered white-clawed crayfish (Austropotamobius pallipess. str.) in a small rhithral river in Germany

Wendler

Biss

Chucholl

2015

Knowl. Manag. Aquat. Ecosyst.

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Key-words: population dynamics, imperiled species, white-clawed crayfish, stone crayfish, AustropotamobiusSound knowledge on distribution and ecology of imperiled species is an essential prerequisite for effective conservation planning. Here, we report the distribution and autecological traits of a newly discovered population of critically-endangered white-clawed crayfish (Austropotamobius pallipes s. str.) in a small river in southwestern Germany. Using an established crayfish survey protocol, we detected white-clawed crayfish in a river stretch of 4.5 km, with an estimated abundance of 1.4 ± 0.2 indiv.·m −2 . The sex ratio was even and sexual maturity was attained at approximately 25 mm carapace length (CL). Life-history traits, as assessed using Von Bertalanffy's growth function, indicate a life history most similar to populations in France, with longevity, asymptotic size, and growth performance index being higher in males than in females (11 y, 46 mm CL, and 2.8 and 9 y, 41 mm CL, and 2.7, for males and females, respectively). Estimated fecundity ranged from 9 to 135 eggs·female −1 (mean: 90 ± 28). White-clawed crayfish were also found in lower reaches of small tributary streams, of which one also featured endangered stone crayfish (Austropotamobius torrentium). A syntopic occurrence of both species was recorded for the first time within a short stretch. Implications for species conservation are discussed. RÉSUMÉÉcologie de la population d'écrevisses à pattes blanches, en danger (Austropotamobius pallipes s. str.) dans un petit torrent en Allemagne Mots-clés :dynamique des populations, espèces en péril, écrevisse à pattes blanches, Une bonne connaissance sur la distribution et l'écologie des espèces en péril est une condition essentielle pour la planification d'une conservation efficace. Ici, nous rapportons la distribution et les traits autécologiques d'une population nouvellement découverte d'écrevisses à pattes blanches en danger critique (Austropotamobius pallipes s. str.) dans une petite rivière du sud-ouest d'Allemagne. Utilisant un protocole standard de suivi de l'écrevisse, nous avons détecté l'écrevisse à pattes blanches dans un tronçon de la rivière de 4,5 km, avec une abondance estimée de 1,4 ± 0,2 indiv·m −2 . Le sexe ratio était de un et la maturité sexuelle est

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Section: Resultsmentioning

confidence: 99%

Population ecology of endangered white-clawed crayfish (Austropotamobius pallipess. str.) in a small rhithral river in Germany

Wendler

Biss

Chucholl

2015

Knowl. Manag. Aquat. Ecosyst.

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“…Interestingly, substantial divergence between O. immunis from European populations and reference sequences of presumably the same species were observed, suggesting that this taxon may represent a species complex in its original range . Spread of calico crayfish in the Rhine basin is relatively well documented and has been recently reviewed by Chucholl (2012). It successfully invaded several types of both lentic and lotic habitats where it became abundant.…”

Section: > Orconectes Immunis (Hagen 1870); Calico Crayfish (Figure 9)mentioning

confidence: 99%

Continental-wide distribution of crayfish species in Europe: update and maps

Kouba

Petrusek

Kozák

2014

Knowl. Managt. Aquatic Ecosyst.

265

312

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Key-words: crayfish distribution, indigenous species, invasive species, native range, mapsRecently published astacological studies substantially improved available data on distribution of crayfish in various European regions. At the same time, spread of invasive species has been recorded, additional nonindigenous species became established in various countries, and losses of populations of native species due to crayfish plague and other negative factors were observed. We overview recent advances in this knowledge, and provide updated colour maps of the distribution of all crayfish species present in Europe. These maps are originally based on the data from the Atlas of Crayfish in Europe published in 2006 as a result of the CRAYNET project, and were further updated from more recently published reports, grey literature, and especially thanks to contributions and feedback of over 70 specialists from 32 countries. Separate maps are available for all indigenous crayfish species in Europe as well as for three most widespread non-indigenous crayfish species. Additionally, two maps give locations of known findings of crayfish species introduced to Europe after 1980. These newly established alien species have so far restricted distributions; however, the frequency of recent reports suggests that findings of such species resulting from releases of aquarium pets will further increase. RÉSUMÉ Répartition à l'échelle continentale des espèces d'écrevisses en Europe : mises à jour et cartes Mots-clés :distribution des écrevisses, espèces indigènes, espèces envahissantes, Les études astacologiques récemment publiées ont sensiblement amélioré les données disponibles sur la distribution des écrevisses dans les différentes régions européennes. Dans le même temps, la propagation des espèces envahissantes a été enregistrée, des espèces non indigènes supplémentaires se sont établies dans différents pays, et des pertes de populations d'espèces indigènes en raison de la peste des écrevisses et d'autres facteurs négatifs ont été observées. Nous synthétisons les progrès récents dans la connaissance, et fournissons des cartes en couleur mises à jour de la distribution de toutes les espèces d'écre-visses présentes en Europe. Ces cartes sont à l'origine basées sur les données de l'Atlas des écrevisses en Europe publié en 2006 à la suite du projet CRAYNET, et ont ensuite été mises à jour à partir des études publiées plus récemment, de la

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“…Procambarus fallax f. virginalis in Germany (Chucholl and Pfeiffer, 2010) and Italy (Nonnis , Netherlands (Soes and Koese, 2010), Slovakia (Janský and Mutkovič, 2010) and surprisingly in Sweden (Bohman et al, 2013), Cherax destructor in Italy , and Cherax quadricarinatus in Slovenia (Jaklic and Vrezec, 2011). The introduction pathway of successful invader Orconectes immunis into Europe is unknown and pet trade is one of possible eventualities (Chucholl, 2012). Certain naturalized populations of commercially important Procambarus clarkii were most probably introduced in the same pathway (Chucholl, 2013).…”

Section: Introductionmentioning

confidence: 99%